Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:19:01 2013 Optimize a model with 1300 rows, 26150 columns and 53750 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.55s Presolved: 1200 rows, 26050 columns, 53400 nonzeros Variable types: 25600 continuous, 450 integer (450 binary) Root relaxation: objective 2.198499e+05, 2328 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 219849.939 0 2 - 219849.939 - - 0s H 0 0 252722.75625 219849.939 13.0% - 0s 0 0 219872.353 0 2 252722.756 219872.353 13.0% - 0s 0 0 219883.483 0 2 252722.756 219883.483 13.0% - 0s 0 0 219886.516 0 2 252722.756 219886.516 13.0% - 1s 0 0 219886.626 0 2 252722.756 219886.626 13.0% - 1s 0 0 219890.216 0 2 252722.756 219890.216 13.0% - 1s 0 0 219890.494 0 2 252722.756 219890.494 13.0% - 1s 0 0 219892.216 0 2 252722.756 219892.216 13.0% - 1s 0 0 219892.216 0 2 252722.756 219892.216 13.0% - 1s 0 2 219909.558 0 2 252722.756 219909.558 13.0% - 1s H 54 37 222551.70375 220220.935 1.05% 26.0 3s 94 40 221360.472 6 2 222551.704 220282.260 1.02% 26.3 5s H 135 64 222477.53554 220329.426 0.97% 30.2 5s H 243 149 222467.28942 220459.185 0.90% 23.2 6s H 434 161 222305.51361 221070.754 0.56% 25.3 8s * 439 141 31 222256.96441 221194.158 0.48% 25.7 9s * 477 39 11 221988.26002 221445.729 0.24% 26.7 9s 507 28 221727.088 8 1 221988.260 221657.242 0.15% 27.8 10s * 537 8 39 221983.10724 221923.398 0.03% 27.7 10s Cutting planes: Flow cover: 7 Explored 548 nodes (17581 simplex iterations) in 10.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.219831072369e+05, best bound 2.219654373836e+05, gap 0.0080%